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When a userspace requests EM_CMD_GET_PD_TABLE with an ID of a performance
domain, the kernel reports back the energy model table of the specified
performance domain. The message format of the response is as follows:
EM_A_PD_TABLE_PD_ID (NLA_U32)
EM_A_PD_TABLE_PS (NLA_NESTED)*
EM_A_PS_PERFORMANCE (NLA_U64)
EM_A_PS_FREQUENCY (NLA_U64)
EM_A_PS_POWER (NLA_U64)
EM_A_PS_COST (NLA_U64)
EM_A_PS_FLAGS (NLA_U64)
where EM_A_PD_TABLE_PS can be repeated as many times as there are
performance states (struct em_perf_state).
Signed-off-by: Changwoo Min <changwoo@igalia.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://patch.msgid.link/20251020220914.320832-8-changwoo@igalia.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.